| Student t-tests were used in pair-wise comparisons to assess differences in the density of Mexican spiny pocket mice, white-footed mice, and hispid cotton rats among habitats. |
| Hispid cotton rats and rice rats were dominant prey items, and their rank-order importance in owl diet was independent of seasonal fluctuations in abundance in the field. |
| One factor facilitating the northward range expansion of hispid cotton rats has likely been a switch to occupancy of deeper burrows that extend below the frost line. |
| Densities of the hispid cotton rat were significantly greater in the Muhlenbergia habitat than in King Ranch bluestem. |
| Many rabbits dig burrows, but cottontails and hispid hares do not. |
| Frequently the terms rabbit and hare are used interchangeably, a practice that can cause confusion— jackrabbits, for instance, are actually hares, whereas the rockhares and the hispid hare are rabbits. |
